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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ieee754/flt-32/s_sincosf_data.c
1 /* Compute sine and cosine of argument.
2 Copyright (C) 2018-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
21 #include "math_config.h"
22 #include "s_sincosf.h"
24 /* The constants and polynomials for sine and cosine. The 2nd entry
25 computes -cos (x) rather than cos (x) to get negation for free. */
26 const sincos_t __sincosf_table
[2] =
29 { 1.0, -1.0, -1.0, 1.0 },
33 0x1.45F306DC9C883p
+23,
37 -0x1.ffffffd0c621cp
-2,
39 -0x1.6c087e89a359dp
-10,
40 0x1.99343027bf8c3p
-16,
41 -0x1.555545995a603p
-3,
43 -0x1.994eb3774cf24p
-13
46 { 1.0, -1.0, -1.0, 1.0 },
50 0x1.45F306DC9C883p
+23,
55 -0x1.55553e1068f19p
-5,
56 0x1.6c087e89a359dp
-10,
57 -0x1.99343027bf8c3p
-16,
58 -0x1.555545995a603p
-3,
60 -0x1.994eb3774cf24p
-13
64 /* Table with 4/PI to 192 bit precision. To avoid unaligned accesses
65 only 8 new bits are added per entry, making the table 4 times larger. */
66 const uint32_t __inv_pio4
[24] =
68 0xa2, 0xa2f9, 0xa2f983, 0xa2f9836e,
69 0xf9836e4e, 0x836e4e44, 0x6e4e4415, 0x4e441529,
70 0x441529fc, 0x1529fc27, 0x29fc2757, 0xfc2757d1,
71 0x2757d1f5, 0x57d1f534, 0xd1f534dd, 0xf534ddc0,
72 0x34ddc0db, 0xddc0db62, 0xc0db6295, 0xdb629599,
73 0x6295993c, 0x95993c43, 0x993c4390, 0x3c439041